Family name Roscka (Roscka 
) , in the world, is an extremely rare last name. The last name Roscka is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Roscka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Roscka | Democratic Republic of the Congo, United States |